Filtering device and fishery breeding system

Abstract

The filtering device comprises a shell, a filter cartridge and a water outlet assembly, a water inlet cavity and a water purification cavity are formed in the shell, the water inlet cavity is provided with a water inlet, the water purification cavity is provided with a water outlet, the filter cartridge is arranged in the water purification cavity, one end of the filter cartridge is opened and communicated with the water inlet cavity, and the other end of the filter cartridge is communicated with the water outlet assembly. The water outlet assembly comprises a movable part, a sliding part, a sewage pipe and an elastic piece, the movable part is movably arranged on the shell, the sliding part is slidably connected to the movable part, the sewage pipe is connected to the sliding part, and the elastic piece is arranged between the movable part and the sliding part; wherein the movable part can move to enable the sewage pipe to be communicated with or separated from the filter cartridge, and when the sewage pipe is communicated with the filter cartridge, the elastic force of the elastic piece enables the sliding part to have a sliding trend of driving the sewage pipe to approach the filter cartridge. According to the filtering device and the fishery breeding system, when the filtering cylinder is filtered, the communication sealing performance of the sewage pipe and the filtering cylinder is better, and the cleaning effect of the filtering cylinder is better.

Description

Technical Field

[0001] The utility model relates to the technical field of fishery breeding, in particular to a filtering device and a fishery breeding system. Background Art

[0002] After being discharged from the sewage pipe, the used water from the aquaculture device is filtered through a filter device and, after undergoing other treatment processes, re-enters the aquaculture device to achieve water recycling. In the related art, the filter device includes a housing, which is formed with a clean water chamber and a water inlet chamber. The housing is provided with a filter cartridge, which is located in the clean water chamber. One end of the filter cartridge is configured as an open end and connected to the water inlet chamber. The housing is also provided with a movable sewage pipe. During water filtration, the water to be filtered enters the water inlet chamber and then enters the filter cartridge. After being filtered by the filter cartridge, it enters the clean water chamber and is discharged. When the filter cartridge needs to be cleaned, the sewage pipe is moved to connect the sewage pipe with the filter cartridge, thereby connecting the filter cartridge to the external atmosphere. The pressure in the clean water chamber becomes greater than the pressure in the filter cartridge. The pressure difference allows the water in the clean water chamber to flow back into the filter cartridge, thereby cleaning the filter cartridge. However, during use, it was found that after the sewage pipe and the filter cartridge are connected, the connection sealing problem is prone to occur, which in turn leads to poor filter cartridge cleaning effect. Utility Model Content

[0003] The present invention aims to solve at least one of the technical problems in the prior art. To this end, the present invention provides a filtering device that allows a sewage pipe to be connected to the filter cartridge with better sealing when filtering the filter cartridge, thereby achieving a better filter cartridge cleaning effect.

[0004] The utility model also provides a fishery breeding system with the filtering device.

[0005] According to the first aspect of the present invention, the filtering device includes a shell, a filter cartridge and a water outlet assembly, a water inlet chamber and a clean water chamber are formed inside the shell, the water inlet chamber is provided with a water inlet, the clean water chamber is provided with a water outlet, the filter cartridge is arranged in the clean water chamber, one end of the filter cartridge is opened and connected to the water inlet chamber, the water outlet assembly includes a movable part, a sliding part, a sewage pipe and an elastic part, the movable part is movably provided in the shell, the sliding part is slidably connected to the movable part, the sewage pipe is connected to the sliding part, and the elastic part is provided between the movable part and the sliding part; wherein, the movable part can be moved to connect or separate the sewage pipe with the filter cartridge, and when the sewage pipe is connected to the filter cartridge, the elastic force of the elastic part makes the sliding part have a sliding tendency to drive the sewage pipe to approach the filter cartridge.

[0006] The filter device according to the embodiment of the present invention has at least the following beneficial effects:

[0007] In the present invention, when it is necessary to filter water, the movable part is movably adjusted to separate the sewage pipe from the open end of the filter cartridge. The water to be filtered enters the water inlet cavity through the water inlet, then enters the filter cartridge through the open end of the filter cartridge, enters the clean water cavity after being filtered by the filter cartridge, and is finally discharged from the water outlet. When it is necessary to clean the filter cartridge, the movable part is movably adjusted to connect the sewage pipe with the open end of the filter cartridge, so that the inner cavity of the filter cartridge is connected to the atmosphere, and the pressure in the clean water cavity is greater than the pressure in the filter cartridge. The pressure difference can cause the water in the clean water cavity to reversely enter the filter cartridge, thereby cleaning the filter cartridge, and the sewage generated by cleaning can be discharged through the sewage pipe. According to the filtering device of the embodiment of the present invention, when cleaning the filter cartridge, the elastic force of the elastic member can make the sliding part have a sliding tendency to drive the sewage pipe toward the filter cartridge, thereby making the sewage pipe and the filter cartridge more closely connected, thereby improving the cleaning effect of the filter cartridge.

[0008] According to some embodiments of the present invention, the sewage pipe is provided with a water inlet end, a partition is provided in the shell and the water inlet chamber and the clean water chamber are formed by separating the water inlet chamber and the clean water chamber by the partition, the partition is provided with a connecting port connecting the water inlet chamber and the filter cartridge, the elastic force of the elastic part makes the water inlet end tightly attached to the end face of the partition, and the movable part can move to connect or separate the water inlet end with the connecting port.

[0009] According to some embodiments of the present invention, during the movement of the movable portion, the water inlet end moves in a direction parallel to the end surface of the partition.

[0010] According to some embodiments of the present invention, the water outlet assembly further includes an elastic ring, which is provided with a connecting groove, the connecting groove extending along the circumference of the elastic ring, and the side of the water inlet end close to the partition is inserted into the connecting groove.

[0011] According to some embodiments of the present invention, a plurality of filter cartridges are provided, and the plurality of filter cartridges are parallel to each other, and the movable portion can be moved to connect the sewage pipe with different filter cartridges.

[0012] According to some embodiments of the present invention, the movable part is rotatably provided on the shell, the rotation axis of the movable part is parallel to the length direction of the filter cartridge, the multiple filter cartridges are arranged circumferentially along the rotation axis, and the movable part can be rotated to make the sewage pipe and the multiple filter cartridges connected in sequence; or, the filter cartridge includes at least two groups, each group of the filter cartridge includes a multiple filter cartridges arranged circumferentially along the rotation axis, the distance between the filter cartridges in different groups and the rotation axis is different, the sewage pipe is provided with a water inlet end corresponding to each group of the filter cartridges, and the movable part can be rotated to make the water inlet end connected with the multiple filter cartridges in a corresponding group in sequence.

[0013] According to some embodiments of the present invention, the movable part is configured as a rotating shaft, and the water outlet assembly further includes a driving motor, which is disposed in the housing and connected to the rotating shaft to drive the rotating shaft to rotate.

[0014] According to some embodiments of the present invention, the rotating shaft is provided with a first connecting portion, the sliding portion includes a sliding sleeve and a connecting sleeve, the sliding sleeve is cooperatively sleeved on the outside of the rotating shaft, the sliding sleeve is connected to the second connecting portion, the elastic member is configured as a coil spring, the coil spring is sleeved on the outside of the sliding sleeve, the two ends of the coil spring are respectively connected to the first connecting portion and the second connecting portion, the connecting sleeve is sleeved on the outside of the coil spring, the connecting sleeve is connected to the second connecting portion, and the sewage pipe is connected to the connecting sleeve.

[0015] According to some embodiments of the present invention, the water outlet assembly further includes a water outlet pipe, which is disposed on the shell and provided with a valve. The sewage pipe has a water outlet end, which is rotatably connected to the water outlet pipe.

[0016] According to the second embodiment of the present invention, the fishery farming system includes the filtering device described in the first embodiment.

[0017] The fishery farming system according to the embodiment of the present invention has at least the following beneficial effects:

[0018] When the filter cartridge is cleaned using the filter device of the first embodiment of the present invention, the elastic force of the elastic part can cause the sliding portion to have a sliding tendency to drive the sewage pipe toward the filter cartridge, thereby making the sewage pipe and the filter cartridge more closely connected, thereby improving the cleaning effect of the filter cartridge.

[0019] Additional aspects and advantages of the present invention will be partially given in the following description, and some of the additional aspects and advantages will become apparent from the following description, or will be learned through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The present invention will be further described below with reference to the accompanying drawings and embodiments, wherein:

[0021] Figure 1 This is a schematic diagram of the overall structure of the filtering device of the present invention;

[0022] Figure 2 for Figure 1 sectional view of

[0023] Figure 3 It is a working diagram for filtering water;

[0024] Figure 4This is a working diagram for cleaning the filter cartridge;

[0025] Figure 5 This is a schematic diagram of the filter cartridge installation;

[0026] Figure 6 This is a schematic diagram of the installation of the elastic ring;

[0027] Figure 7 for Figure 2 Enlarged view of point A in the middle.

[0028] Figure Number:

[0029] Housing 100; water inlet chamber 101; water purification chamber 102; water inlet 103; water outlet 104; partition 105; communication port 106;

[0030] Filter cartridge 200;

[0031] Water outlet assembly 300; movable part 301; sliding part 302; sewage pipe 303; elastic member 304; water inlet end 305; elastic ring 306; drive motor 307; first connecting part 308; sliding sleeve 309; second connecting part 310; connecting sleeve 311; water outlet pipe 312; valve 313; water outlet end 314. DETAILED DESCRIPTION

[0032] The following describes embodiments of the present invention in detail. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended only to explain the present invention and are not to be construed as limiting the present invention.

[0033] In the description of the present invention, it should be understood that descriptions involving orientation, such as the orientation or positional relationship indicated by up, down, etc., are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0034] In the description of this utility model, "a plurality" refers to two or more. The use of "first" or "second" is solely for the purpose of distinguishing technical features and should not be construed as indicating or implying relative importance, or implicitly indicating the number of technical features indicated, or implicitly indicating the order of the technical features indicated.

[0035] In the description of the present invention, unless otherwise clearly defined, terms such as setting, installing, and connecting should be understood in a broad sense, and technicians in the relevant technical field can reasonably determine the specific meanings of the above terms in the present invention based on the specific content of the technical solution.

[0036] Reference below Figures 1 to 7 The present invention provides a filtering device and a fish farming system according to an embodiment of the present invention.

[0037] According to the filtering device of the first embodiment of the utility model, Figures 1 to 7 As shown, it includes a housing 100 , a filter cartridge 200 and a water outlet assembly 300 .

[0038] Among them, a water inlet chamber 101 and a water purification chamber 102 are formed inside the shell 100, and the water inlet chamber 101 and the water purification chamber 102 are separated. The water inlet chamber 101 is provided with a water inlet 103, and the water inlet 103 is for the water to be filtered to enter. The water purification chamber 102 is provided with a water outlet 104, and the water outlet 104 is for the filtered water to be discharged.

[0039] The filter cartridge 200 can be cylindrical, and the filter cartridge 200 can be located as a whole in the water purification chamber 102. The number of filter cartridges 200 can be one or more. One end of the filter cartridge 200 in the length direction is opened and connected to the water inlet chamber 101. The side wall of the filter cartridge 200 can be provided with a filter membrane or other suitable filtering structure.

[0040] The water outlet assembly 300 includes a movable portion 301, a sliding portion 302, a sewage pipe 303, and an elastic member 304. The movable portion 301 is movably mounted on the housing 100 and can be moved in various ways, such as rotation or translation. The sliding portion 302 is slidably connected to the movable portion 301, and the sliding direction of the sliding portion 302 can be parallel to the length of the filter cartridge 200. The sewage pipe 303 is connected to the sliding portion 302, and the elastic member 304 is disposed between the movable portion 301 and the sliding portion 302.

[0041] Among them, the movable part 301 can move to connect or separate the sewage pipe 303 with the filter cartridge 200, and when the sewage pipe 303 is connected with the filter cartridge 200, the elastic force of the elastic part 304 makes the sliding part 302 have a sliding tendency, and this sliding tendency makes the sewage pipe 303 on the elastic part 304 have a tendency to move toward the direction close to the filter cartridge 200.

[0042] In the present invention, when it is necessary to filter water, the movable part 301 is movably adjusted to separate the sewage pipe 303 from the open end of the filter cartridge 200, and the water to be filtered enters the water inlet chamber 101 through the water inlet 103, and then enters the filter cartridge 200 through the open end of the filter cartridge 200. After being filtered by the filter cartridge 200, it enters the clean water chamber 102 and is finally discharged from the water outlet 104. When it is necessary to clean the filter cartridge 200, the movable part 301 is movably adjusted to connect the sewage pipe 303 with the open end of the filter cartridge 200, and then the inner cavity of the filter cartridge 200 is connected to the atmosphere, and the pressure in the clean water chamber 102 is greater than the pressure in the filter cartridge 200. The water in the clean water chamber 102 can be reversely entered into the filter cartridge 200 through the pressure difference, thereby cleaning the filter cartridge 200, and the sewage generated by cleaning can be discharged through the sewage pipe 303.

[0043] According to the filtering device of the embodiment of the present invention, when the filter cartridge 200 is cleaned, the sewage pipe 303 is connected to the filter cartridge 200. Through the elastic force of the elastic member 304, the sliding portion 302 can have a sliding tendency to drive the sewage pipe 303 to move toward the direction close to the filter cartridge 200. However, since the sewage pipe 303 is blocked, it cannot move in the direction close to the filter cartridge 200, but only has a tendency to move. The sewage pipe 303 is continuously acted upon by the elastic force of the elastic member 304, which can make the sewage pipe 303 and the filter cartridge 200 connected more closely, thereby improving the cleaning effect of the filter cartridge 200.

[0044] refer to Figures 2 to 5 As shown, in some embodiments of the present invention, a sewage pipe 303 is provided with a water inlet end 305, a partition 105 is provided in the shell 100 and the partition 105 is used to separate the water inlet chamber 101 and the clean water chamber 102, the partition 105 is provided with a connecting port 106 connecting the water inlet chamber 101 and the filter cartridge 200, the elastic force of the elastic member 304 makes the water inlet end 305 close to the end surface of the partition 105, and the movable part 301 can move to connect or separate the water inlet end 305 with the connecting port 106.

[0045] In this embodiment, a partition 105 is provided to achieve a better separation effect between the water inlet chamber 101 and the clean water chamber 102, and the elastic force of the elastic member 304 causes the sewage pipe 303 to have a tendency to move toward the partition 105, thereby enabling the water inlet end 305 of the sewage pipe 303 to always be in close contact with the end face of the partition 105. In this way, when the filter cartridge 200 is filtering, it is possible to prevent unfiltered water in the water inlet chamber 101 from directly entering the sewage pipe 303 through the gap between the sewage pipe 303 and the partition 105, thereby reducing the filtering effect. When the filter cartridge 200 is cleaned, the water inlet end 305 of the sewage pipe 303 can be more closely connected to the connecting port 106, thereby making the connection with the filter cartridge 200 closer, thereby achieving a better cleaning effect on the filter cartridge 200.

[0046] refer to Figures 2 to 5 As shown, in some embodiments of the present invention, during the movement of the movable portion 301, the water inlet end 305 moves in a direction parallel to the end surface of the partition 105. This arrangement ensures that when the movable portion 301 moves and drives the water inlet end 305 of the sewage pipe 303 to move, the water inlet end 305 of the sewage pipe 303 always remains in close contact with the end surface of the partition 105, thereby improving practicality.

[0047] refer to Figure 5 and Figure 6 As shown, in some embodiments of the present invention, the water outlet assembly 300 further includes an elastic ring 306. The elastic ring 306 is provided with a connecting groove. The connecting groove extends along the circumference of the elastic ring 306 to form an annular shape. The side of the water inlet end 305 near the partition 105 is inserted into the connecting groove. The elastic ring 306 can be made of elastic rubber or elastic plastic. The elastic ring 306 is provided on the side of the water inlet end 305 near the partition 105. The water inlet end 305 elastically abuts against the end surface of the partition 105 via the elastic ring 306. This improves the sealing effect between the water inlet end 305 and the partition 105.

[0048] refer to Figures 2 to 5 As shown, in some embodiments of the present invention, multiple filter cartridges 200 are provided, each of which is parallel to the other. The movable portion 301 can be movable to connect the sewage pipe 303 to different filter cartridges 200. For example, the partition 105 can be provided with a communication port 106 corresponding to each filter cartridge 200, with the same end of the multiple filter cartridges 200 connected to the partition 105. In this embodiment, the provision of multiple filter cartridges 200 provides better water filtration, higher filtration efficiency, and improved practicality.

[0049] refer to Figures 2 to 5As shown, in some embodiments of the present invention, the movable part 301 is rotatably provided on the shell 100, and the rotation axis of the movable part 301 is parallel to the length direction of the filter cartridge 200. The filter cartridge 200 includes at least two groups, and each group of filter cartridges 200 includes multiple filter cartridges 200 arranged circumferentially along the rotation axis. The distances between the filter cartridges 200 of different groups and the rotation axis are different. The sewage pipe 303 is provided with a water inlet end 305 corresponding to each group of filter cartridges 200, and the movable part 301 can be rotated so that the water inlet end 305 is connected with the multiple filter cartridges 200 of the corresponding group in sequence. For example, the filter cartridge 200 may include two groups, each group of filter cartridges 200 includes multiple filter cartridges 200, and the multiple filter cartridges 200 in the same group may be evenly arranged along the circumference of the rotation axis of the movable part 301. The distances between the center lines of the filter cartridges 200 in different groups and the rotation axis of the movable part 301 are different. The sewage pipe 303 may be provided with a water inlet end 305 corresponding to each group of filter cartridges 200, and the distances between the two water inlet ends 305 and the rotation axis of the movable part 301 are different. When the movable part 301 rotates, one of the water inlet ends 305 is connected in sequence with the multiple filter cartridges 200 corresponding to one group, and the other water inlet end 305 is connected in sequence with the multiple filter cartridges 200 corresponding to the other group. In this way, at least two filter cartridges 200 can be cleaned at the same time, thereby improving the cleaning efficiency and achieving better cleaning effect of the filter cartridges 200.

[0050] It should be noted that in some other embodiments of the present invention, multiple filter cartridges 200 may be arranged circumferentially along the rotation axis of the movable part 301 to form a circle, and the movable part 301 can be rotated to connect the sewage pipe 303 with the multiple filter cartridges 200 in sequence.

[0051] refer to Figures 1 to 5 As shown, in some embodiments of the present invention, the movable portion 301 is configured as a rotating shaft, and the water outlet assembly 300 further includes a drive motor 307. The drive motor 307 is disposed within the housing 100 and connected to the rotating shaft to drive the rotating shaft to rotate. For example, the drive motor 307 can be disposed on a side of the clean water chamber 102 away from the water inlet chamber 101. The clean water chamber 102 can be provided with a sleeve, through which the rotating shaft is inserted. When the drive motor 307 is activated, the drive motor 307 drives the rotating shaft to rotate, which in turn drives the sewage pipe 303 to move, resulting in a higher degree of automation, more convenient operation, and greater time and labor savings.

[0052] refer to Figure 7As shown, in some embodiments of the present invention, the rotating shaft is provided with a first connecting portion 308, the sliding portion 302 includes a sliding sleeve 309 and a connecting sleeve 311, the sliding sleeve 309 is cooperatively sleeved on the outside of the rotating shaft, the sliding sleeve 309 is connected to the second connecting portion 310, the elastic member 304 is configured as a coil spring, the coil spring is sleeved on the outside of the sliding sleeve 309, the two ends of the coil spring are respectively connected to the first connecting portion 308 and the second connecting portion 310, the connecting sleeve 311 is sleeved on the outside of the coil spring, the connecting sleeve 311 is connected to the second connecting portion 310, and the sewage pipe 303 is connected to the connecting sleeve 311. For example, the first connecting part 308 can be a plate-like structure and connected to the end face of the end of the rotating shaft, the sliding sleeve 309 can be fitted on the outer wall of the end of the rotating shaft, the second connecting part 310 can be connected to the end of the sliding sleeve 309 away from the first connecting part 308, one end of the connecting sleeve 311 can be sealed connected to the second connecting part 310, and the other end can be sealed connected to the sewage pipe 303, and the coil spring can be located in the gap between the connecting sleeve 311 and the sliding sleeve 309.

[0053] In this embodiment, the elastic member 304 is configured as a coil spring, which facilitates installation and generates a greater elastic force. The sliding portion 302 is fitted onto the outside of the rotating shaft via a sliding sleeve 309, allowing for more precise sliding of the sliding portion 302, preventing the sewage pipe 303 from swinging and thereby ensuring a tighter connection between the water inlet end 305 of the sewage pipe 303 and the filter cartridge 200. Furthermore, the coil spring is positioned between the connecting sleeve 311 and the sliding sleeve 309, preventing water within the water inlet chamber 101 from contacting and corroding the coil spring, thereby extending its service life and enhancing its practicality.

[0054] It should be noted that the elastic member 304 may also be other suitable structures, for example, a disc spring.

[0055] refer to Figures 1 to 5 As shown, in some embodiments of the present invention, the water outlet assembly 300 further includes a water outlet pipe 312, which is disposed on the housing 100 and is provided with a valve 313. The sewage pipe 303 has a water outlet end 314, which is rotatably connected to the water outlet pipe 312. For example, when the water inlet chamber 101 is located below the water purification chamber 102 and the filter cartridge 200 extends vertically, the water outlet pipe 312 can be disposed at the bottom end of the housing 100, the valve 313 can be an automatic valve or a manual valve, and the water outlet end 314 of the sewage pipe 303 is rotatably connected to the water outlet pipe 312 and sealed.

[0056] In this embodiment, the outlet end 314 of the sewage pipe 303 is rotatably connected to the outlet pipe 312. Water discharged from the sewage pipe 303 is discharged through the outlet pipe 312. The outlet pipe 312 can be fixedly mounted on the housing 100 and does not need to rotate with the housing 100. This not only makes the installation of the outlet pipe 312 more convenient, but also prevents the outlet pipe 312 from interfering with external components. A valve 313 is provided. When the filter cartridge 200 is filtering water, the valve 313 is closed. When the filter cartridge 200 needs to be cleaned, the valve 313 is opened, which is simple and convenient to operate.

[0057] According to the second embodiment of the present invention, the fishery breeding system includes the filtering device of the first embodiment.

[0058] According to the fishery breeding system of the embodiment of the present invention, by adopting the filtering device of the embodiment of the first aspect of the present invention, when cleaning the filter cartridge 200, the elastic force of the elastic member 304 can enable the sliding portion 302 to have a sliding tendency to drive the sewage pipe 303 to move toward the direction close to the filter cartridge 200, thereby making the sewage pipe 303 and the filter cartridge 200 more closely connected, thereby improving the cleaning effect of the filter cartridge 200.

[0059] It should be noted that, since the fishery farming system can adopt all the technical solutions of the filtering device of the first embodiment, it at least has all the beneficial effects brought by the technical solutions of the first embodiment. These additional beneficial effects will not be repeated here.

[0060] It is understandable that the fishery farming system may also include farming devices, biochemical devices, disinfection devices and various pipelines, etc. The other components and operations of the fishery farming system according to the embodiment of the utility model are known to ordinary technicians in this field and will not be described in detail here.

[0061] The embodiments of the present invention are described in detail above with reference to the accompanying drawings. However, the present invention is not limited to the above embodiments. Various changes can be made within the scope of knowledge possessed by ordinary technicians in the relevant technical field without departing from the purpose of the present invention.

Claims

1. A filtering device, characterized in that: include: The shell has a water inlet cavity and a water purification cavity formed therein, the water inlet cavity is provided with a water inlet, and the water purification cavity is provided with a water outlet; A filter cartridge is disposed in the water purification chamber, with one end of the filter cartridge being open and connected to the water inlet chamber; A water outlet assembly includes a movable portion, a sliding portion, a sewage pipe, and an elastic member, wherein the movable portion is movably disposed on the housing, the sliding portion is slidably connected to the movable portion, the sewage pipe is connected to the sliding portion, and the elastic member is disposed between the movable portion and the sliding portion; The movable portion can be moved to connect or separate the sewage pipe from the filter cartridge, and when the sewage pipe is connected to the filter cartridge, the elastic force of the elastic member causes the sliding portion to have a sliding tendency to drive the sewage pipe closer to the filter cartridge.

2. The filtering device according to claim 1, characterized in that The sewage pipe is provided with a water inlet end, a partition is provided in the shell and the water inlet chamber and the clean water chamber are formed by dividing the shell by the partition, the partition is provided with a connecting port connecting the water inlet chamber and the filter cartridge, the elastic force of the elastic member makes the water inlet end tightly attached to the end surface of the partition, and the movable part can move to connect or separate the water inlet end with the connecting port.

3. The filtering device according to claim 2, characterized in that During the movement of the movable portion, the water inlet end moves in a direction parallel to the end surface of the partition.

4. The filtering device according to claim 2, characterized in that The water outlet component also includes: An elastic ring is provided with a connecting groove, the connecting groove extends along the circumference of the elastic ring, and a side of the water inlet end close to the partition is inserted into the connecting groove.

5. The filtering device according to claim 1, characterized in that There are multiple filter cartridges, and the multiple filter cartridges are parallel to each other. The movable part can be moved to connect the sewage pipe with different filter cartridges.

6. The filtering device according to claim 5, characterized in that The movable part is rotatably mounted on the housing, the rotation axis of the movable part is parallel to the length direction of the filter cartridge, the plurality of filter cartridges are arranged circumferentially along the rotation axis, and the movable part can be rotated to connect the sewage pipe with the plurality of filter cartridges in sequence; or The filter cartridges include at least two groups, each group of the filter cartridges includes a plurality of the filter cartridges arranged circumferentially along the rotation axis, the distances between the filter cartridges in different groups and the rotation axis are different, the sewage pipe is provided with a water inlet end corresponding to each group of the filter cartridges, and the movable part can be rotated so that the water inlet end is connected with the plurality of filter cartridges in the corresponding group in sequence.

7. The filtering device according to claim 6, characterized in that The movable part is configured as a rotating shaft, and the water outlet assembly further comprises: The driving motor is arranged in the housing and connected to the rotating shaft to drive the rotating shaft to rotate.

8. The filtering device according to claim 7, characterized in that The rotating shaft is provided with a first connecting portion, and the sliding portion comprises: a sliding sleeve, which is fitted on the outer side of the rotating shaft, the sliding sleeve having a second connecting portion, the elastic member being a coil spring, the coil spring being sleeved on the outer side of the sliding sleeve, and the two ends of the coil spring being respectively connected to the first connecting portion and the second connecting portion; A connecting sleeve is sleeved on the outside of the coil spring, the connecting sleeve is connected to the second connecting portion, and the sewage pipe is connected to the connecting sleeve.

9. The filtering device according to claim 6, characterized in that The water outlet component also includes: A water outlet pipe is arranged on the shell, the water outlet pipe is provided with a valve, the sewage pipe has a water outlet end, and the water outlet end is rotatably connected to the water outlet pipe.

10. A fish farming system, characterized in that: The filter comprises the filter device according to any one of claims 1 to 9.

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